Device for preventing incrustation



(No Model.)

J. L. DONNELLY;

I DEVIUEI'OR PREVENTING INURUSTATION. No. 363,734. Patented May 24, 1887.

UNITED STATES PATENT OFFICE? JAMES LAWRENCE DONNELLY, OF CINCINNATI, OHIO, ASSIGNOR OF ONE- HALF TO E. O. BAYLES, OF SHELBYVILLE, KENTUCKY.

DEVICE FOR PREVENTING INCRUSTATION.

SPECIFICATION forming part of Letters Patent No. 363,734, dated May 24, 1887.

Application filed February 28, 1887. Serial No. 129,205. (No model.)

To all whom it may concern.-

Be it known that I, JAMES LilwRENoE DON- NELLY, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Devices for the Removal and Prevention of 'Incrustation in Boilers; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to certain improvements indevices for preventing incrustation of steam-boilers of that class consisting of a receptacle containing a chemical compound, and so arranged as to allow it to dissolve slowly when placed in the boiler and subjected to the agency of the hot water and steam, and permit the solution to escape in suitable quantities without undue waste, as more fully hereinafter specified.

Heretofore in this class of devices the receptacle has permitted the compound to dis solve and escape with such rapidity that its effectiveness is impaired, as the compound is exhausted long before its chemically-decomposing properties are at an end, thus wasting the solution and rendering the frequent renewal of the device necessary, which is inconvenint and results in the loss of valuable time.

It is theobjeet of my invention to obviate these objections, and provide an economical, reliable,and easily-manipulated device. These objects I attain by the means illustrated in the accompanying drawings, in wl1icl1-+ Figure 1 represents a longitudinal sectional view showing my improved receptacle complete and ready for use; Fig. 2, a cross-section of the receptacle; and Fig. 3, an enlarged longitudinal sectional view of a portion of the receptacle, showing the interior construction of the same in detail.

The letter A indicates a casing or receptacle of meta], preferably sheet metal, of suitable dimensions, and oval in cross-section. Longitudinally extending from end to end of same.

the casing is a cylindrical perforated tube, B, which is soldered to the stationary head 0 of the casing at one end and to across-bar, D, at the other end, so as to be centrally supported in said casing.

The letters E E indicate two longitudinal tubes located at the sides of the receptacle, and likewise soldered to the head 0 and the cross-bar D. The tubes E E are parallel with each other and extend to near the open end of the casing, so as to nearly reach the inside of the removable head G, with which said end is provided, leaving extremely narrow spaces, H, for the percolation of water and steam, as more fully hereinafter explained. The two heads are provided with central apertures, through which extends awire, I, which passes through the central tube, the wire being looped at its outer ends to prevent it from pulling out, to keep the apertures from clogging, assist circulation, and form a means of attachment toa connection conveniently secured in the interior of the boiler to hold the device in place therein. The stationary head, opposite the ends of the tubes E E,is similarly perforated and provided with short wires K, looped attheir inner and outer ends to prevent removal. These wires are all somewhat smaller in diameter than the respective apertures and permit the water and steam to enter the casing and the solution to percolate slowly through the By oscillatory movements of the wires the apertures are kept constantly open.

The casing is filled for use with any compound possessing the proper anti-incrustation characteristics; but as such compound forms no part of the present invention it is unnecessary to describe it herein. After the receptacle is filled the removable head is soldered on and the device secured within the boiler. \Vhen in place, the water and steam will slowly enter and the solution slowly flow out, and by decomposing the mineral constituents of the boiler preventincrustation.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

1. The combination, in a device for prevent ing incrustation in steam-boilers, of a receptacle having a central longitudinal tube perthe boiler at its ends through the central perertures, and the wires, the whole arranged to forations in the heads, and the looped wire operate substantially as specified.

extending through the same, substantially as In testimony whereof I affix my signature in 5 specified. presence of two witnesses.

forated at intervals and communicating with I ings and the boiler by central and lateral ap- 1o 2. The combination, with the shell having JAMES LAWRENCE DONNELLY.

a stationary and movable head, of the central Witnesses:

perforated tube, the side tubes communicating J. R. P. BROWN,

with the interior ofthc easing by narrow open- B. F. CRAIG. l 

